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package com.oracle.truffle.llvm.runtime.nodes.memory;

import com.oracle.truffle.api.interop.InteropException;
import com.oracle.truffle.api.interop.InteropLibrary;
import com.oracle.truffle.api.interop.TruffleObject;
import com.oracle.truffle.llvm.runtime.LLVMContext;
import com.oracle.truffle.llvm.runtime.NFIContextExtension;
import com.oracle.truffle.llvm.runtime.memory.LLVMMemoryOpNode;
import com.oracle.truffle.llvm.runtime.nodes.api.LLVMNode;
import com.oracle.truffle.llvm.runtime.pointer.LLVMPointer;

public final class ProtectReadOnlyGlobalsBlockNode extends LLVMNode implements LLVMMemoryOpNode {

    @Child InteropLibrary interop;

    private final TruffleObject protectReadonlyGlobalsBlock;

    public ProtectReadOnlyGlobalsBlockNode(LLVMContext context) {
        NFIContextExtension nfiContextExtension = context.getLanguage().getContextExtensionOrNull(NFIContextExtension.class);
        this.protectReadonlyGlobalsBlock = nfiContextExtension.getNativeFunction(context, "__sulong_protect_readonly_globals_block", "(POINTER):VOID");
        this.interop = InteropLibrary.getFactory().create(protectReadonlyGlobalsBlock);
    }

    @Override
    public void execute(LLVMPointer ptr) {
        try {
            interop.execute(protectReadonlyGlobalsBlock, ptr);
        } catch (InteropException ex) {
            assert false; // should never happen, but probably also safe to ignore
        }
    }
}
